Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CO2-15-MIL-431999 found under Fireextinguisher by Ansul Fire Protection. The National Stock Number assigned to this part is 4210015906882, and the Federal Supply Class is 4210 Firefighting Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CO2-15-MIL-431999.